Kinda OT: "valid mail server"?

[kwall@kurtwerks.com]

On Mon, Oct 21, 2002 at 10:52:55PM -0500, Matt Nelson wrote:

> 
> 

Content-Description: Forwarded message - Totally OT: valid mail server
> Date: 21 Oct 2002 18:21:05 -0500
> From: Matt Nelson <n5tkn at zonekeeper.org>
> Subject: Totally OT: valid mail server
> To: isp-tech at isp-tech.com
> X-Mailer: Ximian Evolution 1.0.8 (1.0.8-10) 
> 
> Can anyone tell me why Redhat's list server is rejecting my subscription
> attempts, saying I must use a valid mail server?  I don't have this
> problem with any other list I subscribe to.  I run my own mail servers,
> but do not run my own reverse DNS.  Could this be the problem?  Even so,
> why would Redhat be that paranoid?

Because spammers often use spoofed or camouflaged addresses to 
do their nasty work, and not having reverse DNS is a good way to
lie about who you are. Not having reverse DNS lookups configured
is also poor net citizenship.

Kurt
-- 
Don't look back, the lemmings are gaining on you.